Negative thinking will not produce positive changes - ever.
E-Go: Ego Distancing Through Mindfulness, Emotional Intelligence, and the Language of LovePersonally, I do not believe the human mind has any limits but those we impose ourselves.
Education of a Wandering ManThe conscious experience of being a subject arises when a single organism learns to enslave itself.
The Ego Tunnel: The Science of the Mind and the Myth of the Self